Quarter	Billions of US Dollars
2008-01-01	9007.009
2008-04-01	9511.465
2008-07-01	9498.393
2008-10-01	9302.342
2009-01-01	9795.821
2009-04-01	10645.724
2009-07-01	11202.142
2009-10-01	11558.764
2010-01-01	12034.365
2010-04-01	12367.003
2010-07-01	13200.510
2010-10-01	13808.444
2011-01-01	14547.840
2011-04-01	15283.272
2011-07-01	15252.559
2011-10-01	15856.248
2012-01-01	16831.469
2012-04-01	17032.407
2012-07-01	17889.840
2012-10-01	18677.630
2013-01-01	19678.359
2013-04-01	20250.955
2013-07-01	21035.388
2013-10-01	21686.693
2014-01-01	22206.095
2014-04-01	23196.971
2014-07-01	23411.083
2014-10-01	23397.680
2015-01-01	23883.774
2015-04-01	24581.289
2015-07-01	24278.447
2015-10-01	24792.773
2016-01-01	25880.849
2016-04-01	25842.552
2016-07-01	26186.870
2016-10-01	25669.391
2017-01-01	26642.522
2017-04-01	27276.792
2017-07-01	28228.804
2017-10-01	29138.085
2018-01-01	31067.560